JP7500125B1 - footwear - Google Patents

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JP7500125B1
JP7500125B1 JP2024521331A JP2024521331A JP7500125B1 JP 7500125 B1 JP7500125 B1 JP 7500125B1 JP 2024521331 A JP2024521331 A JP 2024521331A JP 2024521331 A JP2024521331 A JP 2024521331A JP 7500125 B1 JP7500125 B1 JP 7500125B1
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bottom portion
ball
sole
toe
footwear
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毅 ▲高▼橋
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BMZ. INC
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Abstract

本発明は、足の生体力学的特性の低下を抑制できる履物を提供する。本発明の履物は、靴底の足の母趾球と小趾球が載る部分に対応する趾球底部に、下方に突出する凸部を備えており、少なくとも前記趾球底部から爪先側の底部に至る全領域に、帯板状の付勢部材を有し、前記凸部が接地したとき、爪先側の前記底部が浮いた状態となり、足指で爪先側を蹴ると前記底部が接地し、前記付勢部材の付勢力により足に前方への推進力を得る形態を有する。The present invention provides footwear that can suppress deterioration of the biomechanical characteristics of the foot. The footwear of the present invention has a convex portion that protrudes downward at the bottom of the ball of the shoe, which corresponds to the portion of the sole on which the ball of the first and little toe rest, and has a band-shaped biasing member at least in the entire area from the bottom of the ball of the shoe to the bottom of the toe side, and when the convex portion touches the ground, the bottom on the toe side is in a floating state, and when the toes kick off the toe side, the bottom part touches the ground, and the biasing force of the biasing member provides forward propulsion to the foot.

Description

本発明は、履物に関する。 The present invention relates to footwear.

従来から、靴底の爪先側を、上方に湾曲（トウスプリング）させて歩行性能を向上させた履物がある。トウスプリングは、足指を地面よりも高い位置に維持して、歩行時やランニング時につまずかないなどの利点がある。 Traditionally, there have been footwear that improve walking performance by curving the toe side of the sole upward (toe spring). The toe spring has the advantage of keeping the toes higher than the ground, preventing tripping when walking or running.

特開２０１５－００２８５０号公報JP 2015-002850 A

しかし、従来の構造は、トウスプリングの機能により、歩行時やランニング時に足指を余り使わなくなり、足の生体力学的特性が低下する虞がある。
そこで、本発明の目的は、上述した従来の課題を解消し、足の生体力学的特性の低下を抑制できる履物を提供することにある。 However, in the conventional structure, the toe spring function causes the toes to be used less when walking or running, which may result in a deterioration of the biomechanical characteristics of the foot.
SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide footwear that can solve the above-mentioned problems of the conventional art and suppress the deterioration of the biomechanical characteristics of the foot.

本発明は、靴底の足の母趾球と小趾球が載る部分に対応した趾球底部に、下方に突出する凸部を備えており、少なくとも前記趾球底部から靴底の爪先側の第１底部に至る全領域に、帯板状の付勢部材を有し、前記凸部が接地したとき、前記爪先側の第１底部が浮いた状態となり、歩行時に足指で爪先側を蹴って踏み出すと、前記爪先側の第１底部が接地して、前記付勢部材の付勢力により足に前方への推進力を得る形態を有する。The present invention has a downwardly protruding convex portion at the base of the ball of the foot that corresponds to the portion of the sole on which the ball of the first toe and the ball of the little toe rest, and has a band-shaped biasing member in at least the entire area from the base of the ball of the foot to the first bottom portion on the toe side of the sole, and when the convex portion touches the ground, the first bottom portion on the toe side is raised, and when the toes kick off the toe side and step forward while walking, the first bottom portion on the toe side touches the ground, and the biasing force of the biasing member provides a forward propulsive force to the foot.

本発明は、靴底の爪先側の第１底部と踵側の第２底部が略面一であり、前記第１底部と前記第２底部の間の第３底部が上に凸の湾曲形状を呈する状態となり、前記第３底部のうち、足の母趾球と小趾球が載る部分に対応する趾球底部に、下方に突出する凸部を備えており、歩行時に体重が掛かると前記凸部が接地して、爪先側の前記第１底部が浮いた状態となり、足指で爪先側を蹴ると前記第１底部が接地して、前記凸部と前記第２底部に体重が掛からなくなり、前記第３底部が上に凸の湾曲形状を呈する状態に、前記靴底の状態を戻すための靴底復元力により足に前方への推進力を得る形態を有する。 The present invention has a configuration in which the first bottom portion on the toe side and the second bottom portion on the heel side of the sole are approximately flush, the third bottom portion between the first bottom portion and the second bottom portion has an upwardly convex curved shape , and the third sole portion has a downwardly protruding convex portion at the bottom of the ball of the foot corresponding to the portion on which the ball of the big toe and the ball of the little toe rest, and when weight is applied during walking, the convex portion comes into contact with the ground and the first sole portion on the toe side is raised, and when the toes kick off the toe side, the first sole comes into contact with the ground and weight is no longer applied to the convex portion and the second sole, so that the third sole portion has an upwardly convex curved shape, and the sole restoring force returns the state of the sole to a state in which the foot obtains a forward propulsive force.

本発明によれば、足の生体力学的特性に良い影響を及ぼすことができる。 The present invention can have a positive effect on the biomechanical properties of the foot.

図１は、本発明の実施の形態に係る履物の分解斜視図である。FIG. 1 is an exploded perspective view of a footwear according to an embodiment of the present invention. 図２は、本発明の実施の形態に係る靴底の斜視図である。FIG. 2 is a perspective view of a shoe sole according to an embodiment of the present invention. 図３は、本発明の実施の形態に係る靴底の側面図である。FIG. 3 is a side view of a shoe sole according to an embodiment of the present invention. 図４は、本発明の実施の形態に係る靴底の下面図である。FIG. 4 is a bottom view of a shoe sole according to an embodiment of the present invention. 図５は、本発明の実施の形態に係る靴底の上面図である。FIG. 5 is a top view of a shoe sole according to an embodiment of the present invention. 図６は、本発明の実施の形態に係る履物の側面図である。FIG. 6 is a side view of a footwear according to an embodiment of the present invention. 図７は、本発明の実施の形態に係る履物を履いた際の側面図である。FIG. 7 is a side view of the footwear according to the embodiment of the present invention when worn. 図８は、本発明の実施の形態に係る立脚期後期の履物の側面図である。FIG. 8 is a side view of footwear in a late stance phase according to an embodiment of the present invention.

［実施の形態１］
以下、図面を参照して本発明の実施の形態１について説明する。
図１は、履物１の分解斜視図である。図1中、ＵＰは上方、ＦＲは前方、ＩＮは内側を示している。履物１は、アッパー２と靴底３とを備える。アッパー２は、履物１の上部および側面部を構成し、着用者の足を覆う袋状の形状を有している。
アッパー２の底には、着用者の足が載置される靴底３が接着されている。靴底３は、足裏を覆う部材であり、略扁平な形状を有している。靴底３は、アウトソール５０と、アウトソール５０の上部に支持されるミッドソール６０と、を有する。 [First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is an exploded perspective view of footwear 1. In Fig. 1, UP indicates upward, FR indicates forward, and IN indicates inside. Footwear 1 includes an upper 2 and a sole 3. The upper 2 constitutes the upper and side portions of footwear 1, and has a bag-like shape that covers the wearer's foot.
A sole 3 on which the wearer's foot rests is adhered to the bottom of the upper 2. The sole 3 is a member that covers the bottom of the foot and has a generally flat shape. The sole 3 has an outsole 50 and a midsole 60 supported on an upper portion of the outsole 50.

本実施の形態１では、靴底３の上部には、履物１の中底であるインソール７０が支持されている。ミッドソール６０とインソール７０の間には、付勢部材１００が配置されている。アウトソール５０、ミッドソール６０、およびインソール７０は、履物１の内部輪郭に倣った形状に形成される。In this embodiment 1, an insole 70, which is the middle sole of the footwear 1, is supported on the upper part of the sole 3. A biasing member 100 is disposed between the midsole 60 and the insole 70. The outsole 50, the midsole 60, and the insole 70 are formed into a shape that follows the internal contour of the footwear 1.

図２は、靴底３を表面側から見た斜視図である。図３は靴底３の側面図、図４は同裏面図、図５は同表面図である。 Figure 2 is a perspective view of the sole 3 as seen from the front side. Figure 3 is a side view of the sole 3, Figure 4 is a rear view of the same, and Figure 5 is a front view of the same.

アウトソール５０は、爪先側の第１底部１０と、踵側の第２底部２０と、第１底部１０および第２底部２０の間の第３底部１５と、を備える。
アウトソール５０は、図３に示すように、平坦面Ｍに置いた状態で、爪先側の第１底部１０と、踵側の第２底部２０とが、平坦面Ｍに接触する。第１底部１０と第２底部２０は、略面一である。平坦面Ｍの上に置いた状態で、第１底部１０と第２底部２０の間の第３底部１５は、平坦面Ｍから上方に浮いた状態となる。
アウトソール５０は、第１底部１０と、第２底部２０が略面一であり、第３底部１５が上に凸の湾曲形状を呈する。 The outsole 50 comprises a first bottom portion 10 on the toe side, a second bottom portion 20 on the heel side, and a third bottom portion 15 between the first bottom portion 10 and the second bottom portion 20.
3, when the outsole 50 is placed on a flat surface M, the first bottom portion 10 on the toe side and the second bottom portion 20 on the heel side are in contact with the flat surface M. The first bottom portion 10 and the second bottom portion 20 are substantially flush. When placed on the flat surface M, the third bottom portion 15 between the first bottom portion 10 and the second bottom portion 20 is suspended above the flat surface M.
The outsole 50 has a first bottom portion 10 and a second bottom portion 20 that are substantially flush with each other, and a third bottom portion 15 that has an upwardly convex curved shape.

第３底部１５は、趾球底部４０を含み、趾球底部４０には、下方に突出する第１支持凸部（凸部）５１が形成されている。第１支持凸部５１は、平坦面Ｍにアウトソール５０を置いた状態で、平坦面Ｍから上方に浮いた状態となる。趾球底部４０は、第３底部１５の前部分に相当し、足の母趾球と小趾球とが載る部分に対応する。なお、足の母趾球と小趾球は、図示を省略している。
第１支持凸部５１は、アウトソール５０の裏面に、一体物として形成されている。第１支持凸部５１は、図５に破線で示すように、履物１の幅方向に略一杯に延び、足の母趾球と小趾球とを支持している。第１支持凸部５１の前後方向の所定幅Ｗは、足の母趾球と小趾球とが載る幅であればよい。 The third bottom 15 includes a ball bottom 40, which has a first support protrusion (protrusion) 51 that protrudes downward. When the outsole 50 is placed on a flat surface M, the first support protrusion 51 is in a state of floating above the flat surface M. The ball bottom 40 corresponds to the front part of the third bottom 15, and corresponds to the part on which the ball of the foot and the ball of the little toe rest. Note that the ball of the foot and the ball of the little toe are not shown in the figure.
The first support protrusion 51 is formed as an integral part on the back surface of the outsole 50. As shown by the dashed line in Fig. 5, the first support protrusion 51 extends almost fully in the width direction of the footwear 1 and supports the ball of the first toe and the ball of the little toe. The predetermined width W in the front-to-rear direction of the first support protrusion 51 may be a width that allows the ball of the first toe and the ball of the little toe to rest on.

アウトソール５０は、足の踵が載る部分に対応する踵底部５５に、下方に突出する第２支持凸部５２を備えている。第２支持凸部５２は、アウトソール５０の裏面に、一体物として形成されている。The outsole 50 has a second support protrusion 52 that protrudes downward from the heel bottom 55, which corresponds to the part on which the heel of the foot rests. The second support protrusion 52 is formed as an integral part on the back surface of the outsole 50.

アウトソール５０の表面には、図１に示すように、ミッドソール６０が重ねられる。ミッドソール６０は、爪先相当部が切断され、ミッドソール６０がアウトソール５０に重ねられると、各ソール５０,６０の表面が面一となる。
アウトソール５０とミッドソール６０の表面には、前端から第１支持凸部５１の間にかけて、履物１の幅方向に延び、下方に窪む複数の溝部６１が構成される。溝部６１が設けられることで、第１底部１０は、剛性が低くなり、曲げやすくなる。溝部６１は、幅方向内側に形成される内側溝部６２と、中心部から幅方向外側にかけて形成される外側溝部６３とで、構成される。本実施の形態では、内側溝部６２は二条形成されており、外側溝部６３は三条形成されている。 1, a midsole 60 is placed on the surface of the outsole 50. The toe portion of the midsole 60 is cut off, and when the midsole 60 is placed on the outsole 50, the surfaces of the soles 50, 60 become flush with each other.
A plurality of grooves 61 extending in the width direction of the footwear 1 and recessed downward are formed on the surfaces of the outsole 50 and the midsole 60 from the front end to between the first support protrusions 51. The provision of the grooves 61 reduces the rigidity of the first bottom 10, making it easier to bend. The grooves 61 are composed of an inner groove 62 formed on the inside in the width direction, and an outer groove 63 formed from the center to the outside in the width direction. In this embodiment, the inner groove 62 is formed in two stripes, and the outer groove 63 is formed in three stripes.

本実施の形態１では、図２に示すように、靴底３の表面に付勢部材１００が配置されている。付勢部材１００は、曲げ強度や剛性に優れた材料が用いられている。本実施の形態１では、付勢部材１００は、カーボン製で、帯板状の板材により形成される。
付勢部材１００は、靴底３の内部輪郭に倣った形状に形成され、図５に示すように、趾球底部４０から爪先側の第１底部１０に至る領域を覆う第１部分１００ａと、第１部分１００ａの後端部に連続する第２部分１００ｂと、を有する。
第２部分１００ｂは、趾球底部４０の後方領域を覆う。第２部分１００ｂは、靴底３の幅方向中途部のみを覆っている。
第１部分１００ａは、靴底３の幅方向一杯に延在し、第２部分１００ｂは、第１部分１００ａよりも幅狭に形成されている。 In the present embodiment, as shown in Fig. 2, a biasing member 100 is disposed on the surface of the sole 3. A material having excellent bending strength and rigidity is used for the biasing member 100. In the present embodiment, the biasing member 100 is made of carbon and is formed of a band-shaped plate material.
The biasing member 100 is formed into a shape that follows the internal contour of the sole 3, and as shown in Figure 5, has a first portion 100a that covers the area from the ball of the foot bottom 40 to the first sole 10 on the toe side, and a second portion 100b that is continuous with the rear end of the first portion 100a.
The second portion 100b covers the rear region of the ball of the foot bottom 40. The second portion 100b covers only a middle portion of the sole 3 in the width direction.
The first portion 100a extends across the entire width of the sole 3, and the second portion 100b is formed to be narrower than the first portion 100a.

図６は、履物１の側面図である。図７、図８は歩行動作の一部を示した図である。
歩行動作は、足が接地する「立脚期」を有する。
立脚期は、踵底部のみが接地する「立脚期初期」と、足の略全面が接地する「立脚期中期」（図７参照）と、踵が接地面から離れる「立脚期後期」（図８参照）と、爪先が接地面から離れる「立脚期最終期」とに分かれる。これらを順番に移行させて、足が接地面を蹴り出し、足に前方推力を得る。 Fig. 6 is a side view of the footwear 1. Figs. 7 and 8 are views showing a part of a walking motion.
Walking has a "stance phase" in which the foot touches the ground.
The stance phase is divided into an "early stance phase" where only the heel touches the ground, a "middle stance phase" where almost the entire foot touches the ground (see FIG. 7), a "late stance phase" where the heel leaves the ground (see FIG. 8), and a "final stance phase" where the toes leave the ground. By transitioning through these in order, the foot pushes off the ground and obtains a forward thrust.

本実施の形態１では、履物１は、図６に示すように、第１底部１０および第２底部２０を接地し、第３底部１５が浮いた状態であるアーチ状の履物である。着用者が履物１を履いたときには、図７に示すように、履物１には、靴底３の全体に荷重が掛かり、第１支持凸部５１と第２支持凸部５２が接地しながら、爪先側の第１底部１０が浮く略フラットな状態となる。この状態は、「立脚期中期」に相当する。着用者の足は、足の踵が第２支持凸部５２に負荷を掛け、足の母趾球と小趾球とが第１支持凸部５１に負荷を掛け、足指がフリーの状態となる。In the present embodiment 1, the footwear 1 is an arch-shaped footwear in which the first sole 10 and the second sole 20 are in contact with the ground and the third sole 15 is in a floating state, as shown in FIG. 6. When the wearer wears the footwear 1, as shown in FIG. 7, the footwear 1 is in a substantially flat state in which the first sole 10 on the toe side is floating while the first support convex portion 51 and the second support convex portion 52 are in contact with the ground. This state corresponds to the "middle stance phase". The heel of the wearer's foot applies a load to the second support convex portion 52, the ball of the big toe and the ball of the little toe apply a load to the first support convex portion 51, and the toes are in a free state.

歩行を開始すると、図８に示すように、踵側の第２支持凸部５２が接地面から離れることで、履物１の爪先側に負荷が掛かり、爪先側の第１底部１０および第１支持凸部５１が接地する。この際、履物１は、逆アーチ状へと変形し、立脚期中期から立脚期後期へと移行する。歩行をさらに進めると、爪先側の第１底部１０が接地したまま、第１支持凸部５１と、踵側の第２支持凸部５２とが、さらに大きく接地面から離れる。
続いて、歩行動作で爪先側を蹴ることによって、図示は省略したが、爪先が接地面から離れる。この状態は、「立脚期最終期」に相当する。 When the user starts walking, as shown in Fig. 8, the second support protrusion 52 on the heel side moves away from the ground surface, a load is applied to the toe side of the footwear 1, and the first bottom 10 and the first support protrusion 51 on the toe side come into contact with the ground. At this time, the footwear 1 deforms into an inverted arch shape and transitions from the middle stance phase to the late stance phase. As the user continues walking, the first support protrusion 51 and the second support protrusion 52 on the heel side move even further away from the ground surface, while the first bottom 10 on the toe side remains in contact with the ground.
Next, by kicking off the toe side during walking, the toe leaves the ground (not shown in the figure). This state corresponds to the "final stance phase."

歩行動作で爪先側を蹴る段階では、第１支持凸部５１と、踵側の第２支持凸部５２とが、大きく接地面から離れるため、第１支持凸部５１と、第２支持凸部５２には体重が掛からなくなり、靴底３には、図６の状態への復元力が付加されて、足に前方への推進力が得られる。それと同時に、本実施の形態１では、靴底３に、付勢部材１００による靴底復元力が付加されて、さらに前方への推進力が得られる。
付勢部材１００は、履物１の靴底３に支持されている。付勢部材１００は、履物１と同様に立脚期に応じて、形状を変化させて、付勢部材１００が元の形状へと戻る際の付勢力が付加されることで、足に前方への推進力を得る。 At the stage of kicking off the toe side in walking, the first support convex portion 51 and the second support convex portion 52 on the heel side are largely separated from the ground surface, so that the weight is no longer applied to the first support convex portion 51 and the second support convex portion 52, and a restoring force to the state shown in Fig. 6 is applied to the sole 3, providing a forward propulsive force to the foot. At the same time, in this embodiment 1, a sole restoring force is applied to the sole 3 by the biasing member 100, providing a further forward propulsive force.
The biasing member 100 is supported by the sole 3 of the footwear 1. The biasing member 100 changes shape in accordance with the stance phase, similar to the footwear 1, and a biasing force is applied when the biasing member 100 returns to its original shape, thereby providing the foot with a forward propulsive force.

この履物１は、以下の４つの歩行時形態を有する。第１形態は、履物１を平坦面Ｍに置いたときの形態である。第１形態では、図６に示すように、爪先側の第１底部１０と、踵側の第２底部２０とが、略面一で、第３底部１５が、平坦面Ｍから上方に浮いた状態となる。すなわち、履物１および付勢部材１００は、アーチ形状となる。This footwear 1 has the following four walking configurations. The first configuration is when the footwear 1 is placed on a flat surface M. In the first configuration, as shown in Figure 6, the first bottom portion 10 on the toe side and the second bottom portion 20 on the heel side are approximately flush, and the third bottom portion 15 is floating above the flat surface M. In other words, the footwear 1 and the biasing member 100 have an arch shape.

第２形態は、履物１を履いたときの形態である。第２形態では、図7に示すように、靴底３が略フラットな状態になり、第１支持凸部５１と第２支持凸部５２が接地し、爪先側の第１底部１０と第３底部が浮いた状態となる。すなわち、履物１および付勢部材１００は、略フラットな形状となる。The second form is the form when the footwear 1 is worn. In the second form, as shown in Fig. 7, the sole 3 is in a substantially flat state, the first support convex portion 51 and the second support convex portion 52 are in contact with the ground, and the first bottom portion 10 and the third bottom portion on the toe side are in a floating state. In other words, the footwear 1 and the biasing member 100 are in a substantially flat shape.

第３形態は、歩行を開始したときの形態である。第３形態では、図８に示すように、爪先側の第１底部１０と第１支持凸部５１の一部が接地し、踵側の第２支持凸部５２が接地面から離れる。すなわち、履物１および付勢部材１００は、後上方に延びる形状となり、逆アーチ形状となる。The third form is the form when walking starts. In the third form, as shown in Fig. 8, the first bottom 10 on the toe side and a part of the first support protrusion 51 are in contact with the ground, and the second support protrusion 52 on the heel side is separated from the ground surface. In other words, the footwear 1 and the biasing member 100 are in a shape that extends upward and to the rear, forming an inverted arch shape.

第４形態は、歩行をさらに進めたときの形態である。第４形態では、爪先側の第１底部１０と第１支持凸部５１が接地し、踵側の第２底部２０が、図８の状態よりも大きく接地面から離れる。すなわち、第３形態より、より反った逆アーチ形状となる。 The fourth form is the form when walking has progressed further. In the fourth form, the first bottom part 10 on the toe side and the first support protrusion 51 are in contact with the ground, and the second bottom part 20 on the heel side is farther away from the ground than in the state of Figure 8. In other words, it has a more curved inverted arch shape than the third form.

本実施の形態１によれば、履物１を履いて歩行する際、第１形態から第４形態まで追従して、靴底３が変形可能なように、靴底３の剛性、柔軟性が設定される。According to this embodiment 1, the rigidity and flexibility of the sole 3 are set so that when walking while wearing the footwear 1, the sole 3 can deform to follow the first to fourth forms.

履物１の靴底３は、図６に示すように、第１底部１０と第２底部２０が略面一で、第３底部１５が、上に凸の湾曲形状を呈するため、履物１を履いた状態では、図7に示すように、第１支持凸部５１が接地すると、爪先側の第１底部１０が僅かに浮いた状態になり、足指がフリーの状態になる。As shown in Figure 6, the sole 3 of the footwear 1 has the first bottom portion 10 and the second bottom portion 20 which are approximately flush with each other, and the third bottom portion 15 which has an upwardly convex curved shape. Therefore, when the footwear 1 is worn, as shown in Figure 7, when the first support convex portion 51 touches the ground, the first bottom portion 10 on the toe side is slightly raised, leaving the toes free.

足指がフリーの状態になるため、歩行動作を開始するときに、足指で地面を掴むような動作が可能となり、足の生体力学的特性の低下を抑制できる。 Because the toes are free, they are able to grip the ground when starting to walk, which helps prevent a decline in the biomechanical characteristics of the foot.

図８に示す状態では、爪先側の第１底部１０を除いて、第１支持凸部５１と、踵側の第２底部２０には体重が掛からない。そのため、靴底３には、図６に示す状態、すなわち第１底部１０と第２底部２０が略面一であり、第３底部１５が上に凸の湾曲形状を呈する状態に戻すための靴底復元力が作用する。
本実施の形態１によれば、歩行動作で爪先側を蹴るときに、靴底復元力が付加されて、足に前方への推進力が得られる。また、同様に、付勢部材１００も靴底と同様に、元の形状に戻ろうとする復元力が付加されるため、より前方への推進力が得られる。
付勢部材１００は、第２部分１００ｂが、履物１の靴底幅中央のみに設けられていることから、左右の剛性が強くなりすぎることを抑制しており、歩行中の左右への体重移動を妨害しない。 In the state shown in Fig. 8, weight is not applied to the first support protrusion 51 and the second bottom portion 20 on the heel side, except for the first bottom portion 10 on the toe side. Therefore, a sole restoring force acts on the sole 3 to return it to the state shown in Fig. 6, that is, the state in which the first bottom portion 10 and the second bottom portion 20 are substantially flush and the third bottom portion 15 has an upwardly convex curved shape.
According to the first embodiment, when the toe side is kicked off during walking, a restoring force of the sole is applied, and a forward propulsive force is obtained for the foot. Similarly, a restoring force that tries to return the biasing member 100 to its original shape is applied to the biasing member 100 in the same manner as the sole, so that a greater forward propulsive force is obtained.
Since the second portion 100b of the biasing member 100 is provided only at the center of the sole width of the footwear 1, the rigidity on the left and right sides is prevented from becoming too strong, and the transfer of weight from side to side while walking is not impeded.

以上説明したように、本実施の形態１によれば、履物の靴底３に付勢部材１００を設けることで、付勢部材１００からの反力を前方推進力として得ることができ、長時間歩行をしても疲れにくい履物１を提供できる。As described above, according to this embodiment 1, by providing a biasing member 100 on the sole 3 of the footwear, the reaction force from the biasing member 100 can be obtained as a forward propulsion force, and footwear 1 can be provided that is less tiring even when walking for long periods of time.

付勢部材１００は、前記趾球底部４０からつま先側の第１底部１０に至る全領域を覆う第１部分１００ａと、第１部分１００ａの後端部に連続し、靴底３の趾球底部４０の後方に位置する底部の領域を覆う第２部分１００ｂと、を備え、第２部分１００ｂは、靴底３の幅方向中途部のみを覆う。
この構成によれば、左右に発生する剛性を抑制することで、歩行時の左右への体重移動において、かかる負荷を軽減できる。 The biasing member 100 comprises a first part 100a covering the entire area from the ball of the toe bottom portion 40 to the first bottom portion 10 on the toe side, and a second part 100b that is continuous with the rear end portion of the first part 100a and covers the bottom area located behind the ball of the toe bottom portion 40 of the sole 3, and the second part 100b covers only the middle portion in the width direction of the sole 3.
According to this configuration, by suppressing the stiffness generated on the left and right sides, it is possible to reduce the load applied when weight is shifted from side to side during walking.

第２部分１００ｂの後端は、靴底３の踵を支持する踵底部より手前に終端する。
この構成によれば、靴底３の爪先部先端から踵底部より手前に付勢部材１００を設けることで、付勢部材１００からの反力を前方推進力として得ることができ、長時間歩行をしても疲れにくい履物１を提供できる。 The rear end of the second portion 100b terminates short of the heel bottom portion of the sole 3 that supports the heel.
According to this configuration, by providing the biasing member 100 from the tip of the toe part of the sole 3 to the heel part, the reaction force from the biasing member 100 can be obtained as a forward propulsion force, and the footwear 1 can be provided in which the wearer does not get tired even when walking for a long time.

上述した実施の形態では、履物１の形状は、アーチ形状の履物１を利用して構成を説明した。しかし、爪先側が前上がり形状である履物に適用しても良く、爪先側が平らな形状である履物にも適用が可能である。
履物１の形状は、第１底部１０と、第２底部２０と、第３底部１５と、が略面一であり、第３底部１５に設けられた凸部５１と、第２底部２０が接地することで、爪先側が浮き上がる形状であっても良い。 In the above embodiment, the footwear 1 has an arch shape. However, the present invention may be applied to footwear having a toe side with a raised front, or to footwear having a flat toe side.
The shape of the footwear 1 may be such that the first sole 10, the second sole 20, and the third sole 15 are approximately flush, and the toe side is raised by the convex portion 51 on the third sole 15 and the second sole 20 coming into contact with the ground.

上述した実施の形態では、靴底３に溝部６１を設ける構成を説明した。しかし、溝部６１の数、形状、大きさ、および窪みの深さは、適宜変形が可能である。また、溝部６１を設けなくても良い。In the above-described embodiment, a configuration in which grooves 61 are provided in the sole 3 has been described. However, the number, shape, size, and depth of the grooves 61 can be modified as appropriate. Also, grooves 61 do not have to be provided.

上述した付勢部材１００は、第１部分１００ａと第２部分１００ｂを形成し、第１底部１０から第３底部１５にかけて設けられた。しかし、付勢部材１００は、歩行時の反発力を得られれば良く、ミッドソール６０全面に設けても良い。The above-mentioned biasing member 100 forms a first portion 100a and a second portion 100b, and is provided from the first bottom portion 10 to the third bottom portion 15. However, the biasing member 100 may be provided on the entire surface of the midsole 60 as long as it can provide a repulsive force during walking.

上述した実施の形態では、付勢部材１００はミッドソール６０の上部に取り付けた。しかし、付勢部材１００は、ソールのいずれかに取り付ければよく、例えば、アウトソール５０やインソール７０に取り付けても良い。また、接着による取り付けだけでなく、埋め込み等により取り付けてもよい。In the above-described embodiment, the biasing member 100 is attached to the upper part of the midsole 60. However, the biasing member 100 may be attached to any part of the sole, for example, the outsole 50 or the insole 70. Moreover, the biasing member 100 may be attached not only by adhesion but also by embedding or the like.

本実施の形態では、アウトソール５０およびミッドソール６０を別体として設け、靴底３を形成していたが、アウトソール５０およびミッドソール６０は一体で形成しても良い。また、インソール７０も含めて、一体で形成してもよく、インソール７０とミッドソール６０を一体で形成しても良い。In this embodiment, the outsole 50 and the midsole 60 are provided as separate bodies to form the sole 3, but the outsole 50 and the midsole 60 may be formed as a single body. The insole 70 may also be formed as a single body, or the insole 70 and the midsole 60 may be formed as a single body.

［実施の形態２］
上記実施の形態１では、ミッドソール６０の上部に、付勢部材１００が取付けられている。実施の形態２では、靴底３の付勢部材１００が省略される。それ以外の構成は、図１～図８に示す実施の形態１と同様に構成される。なお、以下では、実施の形態２を、図６～図８を参照して、説明する。 [Embodiment 2]
In the above-mentioned embodiment 1, the biasing member 100 is attached to the upper part of the midsole 60. In embodiment 2, the biasing member 100 of the sole 3 is omitted. Other configurations are the same as those of embodiment 1 shown in Figures 1 to 8. Note that embodiment 2 will be described below with reference to Figures 6 to 8.

本実施の形態２では、履物１は、図６に示すように、第１底部１０および第２底部２０を接地し、第３底部１５が浮いた状態であるアーチ状の履物である。着用者が履物１を履いたときには、図８に示すように、履物１には、靴底３の全体に荷重が掛かり、第１支持凸部５１と第２支持凸部５２が接地しながら、爪先側の第１底部１０が浮く略フラットな状態となる。この状態は、上述した「立脚期中期」に相当する。着用者の足は、足の踵が第２支持凸部５２に負荷を掛け、足の母趾球と小趾球とが第１支持凸部５１に負荷を掛け、足指がフリーの状態となる。In the second embodiment, the footwear 1 is an arch-shaped footwear in which the first sole 10 and the second sole 20 are in contact with the ground and the third sole 15 is in a floating state, as shown in FIG. 6. When the wearer wears the footwear 1, as shown in FIG. 8, the footwear 1 is in a substantially flat state in which the first sole 10 on the toe side is floating while the first support convex portion 51 and the second support convex portion 52 are in contact with the ground. This state corresponds to the "middle stance phase" described above. The heel of the wearer's foot applies a load to the second support convex portion 52, the ball of the big toe and the ball of the little toe apply a load to the first support convex portion 51, and the toes are in a free state.

足指がフリーの状態になるため、歩行動作を開始するときに、足指で地面を掴むような動作が可能となり、足の生体力学的特性の低下を抑制できる。 Because the toes are free, they are able to grip the ground when starting to walk, which helps prevent a decline in the biomechanical properties of the foot.

歩行を開始すると、図８に示すように、踵側の第２支持凸部５２が接地面から離れることで、履物１の爪先側に負荷が掛かり、爪先側の第１底部１０および第１支持凸部５１が接地する。この際、履物１は、逆アーチ状へと変形し、立脚期中期から立脚期後期へと移行する。歩行をさらに進めると、爪先側の第１底部１０が接地したまま、第１支持凸部５１と、踵側の第２支持凸部５２とが、さらに大きく接地面から離れる。When walking begins, as shown in Figure 8, the second support protrusion 52 on the heel side moves away from the ground surface, applying a load to the toe side of the footwear 1 and causing the first bottom 10 and first support protrusion 51 on the toe side to touch the ground. At this time, the footwear 1 deforms into an inverted arch shape and transitions from the middle stance phase to the late stance phase. As walking continues, the first support protrusion 51 and the second support protrusion 52 on the heel side move even further away from the ground surface while the first bottom 10 on the toe side remains in contact with the ground.

続いて、歩行動作で爪先側を蹴ることによって、図示は省略したが、爪先が接地面から離れる。この状態は、上述した「立脚期最終期」に相当する。 Next, by kicking off with the toes during walking, the toes leave the ground (not shown). This state corresponds to the "final stance phase" described above.

図８に示す状態では、爪先側の第１底部１０を除いて、第１支持凸部５１と、踵側の第２底部２０には体重が掛からない。そのため、靴底３には、図６に示す状態、すなわち第１底部１０と第２底部２０が略面一であり、第３底部１５が上に凸の湾曲形状を呈する状態に戻すための靴底復元力が作用する。
本実施の形態２によれば、歩行動作で爪先側を蹴るときに、靴底復元力が付加されて、足に前方への推進力が得られる。 In the state shown in Fig. 8, weight is not applied to the first support protrusion 51 and the second bottom portion 20 on the heel side, except for the first bottom portion 10 on the toe side. Therefore, a sole restoring force acts on the sole 3 to return it to the state shown in Fig. 6, that is, the state in which the first bottom portion 10 and the second bottom portion 20 are substantially flush and the third bottom portion 15 has an upwardly convex curved shape.
According to the second embodiment, when the toe side is kicked off during walking, a restoring force of the shoe sole is applied, and a forward propulsive force is obtained for the foot.

実施の形態２によれば、付勢部材１００が省略されているが、履物１は、第３底部１５が上に凸で、靴底３の裏面がアーチ形状を呈するため、歩行時の履物１には、図７に示すように、靴底３がフラットな状態から、靴底３の裏面が湾曲形状となる図６の状態に戻すための靴底復元力が作用し、歩行のための前方推進力が得られ、歩行時に疲れにくい履物１を提供できる。実施の形態２によれば、実施の形態１と同様に、履物１を履いて歩行する際、上記第１形態から上記第４形態まで追従して、靴底３が変形可能なように、靴底３の剛性、柔軟性が設定される。According to the second embodiment, the biasing member 100 is omitted, but the footwear 1 has a third bottom portion 15 that is convex upward and an arch-shaped bottom surface of the sole 3, so that when walking, the footwear 1 is subjected to a sole restoring force that returns the sole 3 from a flat state to the state shown in FIG. 6 in which the bottom surface of the sole 3 is curved, as shown in FIG. 7, and a forward propulsive force for walking is obtained, providing footwear 1 that is less tiring to walk in. According to the second embodiment, as in the first embodiment, the rigidity and flexibility of the sole 3 are set so that the sole 3 can deform to follow the first form to the fourth form when walking while wearing the footwear 1.

上述した実施の形態２では、履物１の形状は、アーチ形状の履物１を利用して構成を説明した。しかし、靴底３の第３底部１５が上に凸の湾曲形状を呈し、靴底３の裏面がアーチ形状であれば、爪先側が前上がり形状である履物に適用してもよく、爪先側が平らな形状である履物にも適用が可能である。In the above-mentioned second embodiment, the configuration of the footwear 1 has been described using an arch-shaped footwear 1. However, if the third bottom portion 15 of the sole 3 has an upwardly convex curved shape and the underside of the sole 3 has an arch shape, the present invention may be applied to footwear with a toe side that rises forward, and may also be applied to footwear with a flat toe side.

上述した実施の形態は、あくまでも本発明の一態様を示すものであり、本発明の主旨を逸脱しない範囲で任意に変形および応用が可能である。The above-described embodiment merely represents one aspect of the present invention, and any modifications and applications are possible without departing from the spirit and scope of the present invention.

１ 履物
２ アッパー
３ 靴底
１０ 第１底部
１５ 第３底部
２０ 第２底部
４０ 趾球底部
５０ アウトソール
５１ 第１支持凸部（凸部）
５２ 第２支持凸部
５５ 踵底部
６０ ミッドソール
６１ 溝部
６２ 内側溝部
６３ 外側溝部
７０ インソール
１００ 付勢部材
１００ａ 第１部分
１００ｂ 第２部分
Ｍ 平坦面
Ｗ 所定幅 Reference Signs List 1 Footwear 2 Upper 3 Sole 10 First bottom portion 15 Third bottom portion 20 Second bottom portion 40 Ball bottom portion 50 Outsole 51 First support convex portion (convex portion)
52 Second support protrusion 55 Heel bottom 60 Midsole 61 Groove 62 Inner groove 63 Outer groove 70 Insole 100 Pressing member 100a First portion 100b Second portion M Flat surface W Predetermined width

Claims (6)

靴底の足の母趾球と小趾球が載る部分に対応した趾球底部に、下方に突出する凸部を備えており、少なくとも前記趾球底部から靴底の爪先側の第１底部に至る全領域に、帯板状の付勢部材を有し、
前記凸部が接地したとき、前記爪先側の第１底部が浮いた状態となり、
歩行時に足指で爪先側を蹴って踏み出すと、前記爪先側の第１底部が接地して、前記付勢部材の付勢力により足に前方への推進力を得る形態を有する、
履物。 The shoe sole is provided with a convex portion protruding downward at a bottom portion of the ball of the foot that corresponds to the portion on which the ball of the first toe and the ball of the little toe rest, and has a strip-shaped biasing member at least in the entire area from the bottom portion of the ball of the foot to a first bottom portion on the toe side of the shoe sole,
When the protrusion touches the ground, the first bottom portion on the toe side is in a floating state,
When the user steps forward by kicking off the toe side with the toes during walking, the first bottom portion on the toe side comes into contact with the ground, and the biasing force of the biasing member imparts a forward propulsive force to the foot.
footwear. 前記第１底部と踵側の第２底部が略面一である、
請求項１に記載の履物。 The first bottom portion and the second bottom portion on the heel side are substantially flush with each other.
Footwear according to claim 1. 前記第１底部と前記第２底部の間の第３底部が浮いた状態となり、
前記第３底部のうちの前記趾球底部に、前記凸部を備える、
請求項２に記載の履物。 A third bottom portion between the first bottom portion and the second bottom portion is in a floating state,
The third bottom portion is provided at the base of the ball of the foot.
Footwear according to claim 2. 前記付勢部材は、前記趾球底部から前記爪先側の底部に至る領域を覆う第１部分と、前記第１部分の後端部に連続し、靴底の前記趾球底部の後方に位置する底部の領域を覆う第２部分と、を備え、
前記第２部分は、靴底の幅方向中途部のみを覆う、
請求項１から３のいずれかに記載の履物。 the biasing member includes a first portion covering an area extending from the ball of the foot to the bottom of the toe side, and a second portion continuous with a rear end of the first portion and covering an area of the bottom portion located behind the ball of the foot of the shoe sole,
The second portion covers only a widthwise middle portion of the sole.
Footwear according to any one of claims 1 to 3. 前記第２部分の後端は、靴底の踵を支持する踵底部より手前に終端する、
請求項４に記載の履物。 The rear end of the second portion terminates before a heel bottom portion that supports the heel of the shoe sole.
Footwear according to claim 4. 靴底の爪先側の第１底部と踵側の第２底部が略面一であり、
前記第１底部と前記第２底部の間の第３底部が上に凸の湾曲形状を呈する状態となり、
前記第３底部のうち、足の母趾球と小趾球が載る部分に対応する趾球底部に、下方に突出する凸部を備えており、歩行時に体重が掛かると前記凸部が接地して、爪先側の前記第１底部が浮いた状態となり、
足指で爪先側を蹴ると前記第１底部が接地して、前記凸部と前記第２底部に体重が掛からなくなり、前記第３底部が上に凸の湾曲形状を呈する状態に、前記靴底の状態を戻すための靴底復元力により足に前方への推進力を得る形態を有する、
履物。 The first bottom portion on the toe side of the shoe sole and the second bottom portion on the heel side are substantially flush with each other,
A third bottom portion between the first bottom portion and the second bottom portion has an upwardly convex curved shape ,
The third bottom portion has a convex portion protruding downward at a bottom portion of the ball of the foot corresponding to the portion on which the ball of the big toe and the ball of the little toe rest. When weight is applied during walking, the convex portion comes into contact with the ground, and the first bottom portion on the toe side is raised.
When the toes kick off the toe side, the first bottom part touches the ground, the weight is no longer applied to the convex part and the second bottom part, and the third bottom part assumes an upwardly convex curved shape, and a forward propulsive force is obtained from the sole restoring force for returning the state of the sole to the state where the third bottom part assumes an upwardly convex curved shape.
footwear.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010051657A (en) 2008-08-29 2010-03-11 Asahi Corp Shoe sole
WO2020021622A1 (en) 2018-07-24 2020-01-30 株式会社Ｂｍｚ Shoe insole
WO2021210045A1 (en) 2020-04-13 2021-10-21 株式会社アシックス Sole and footwear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010051657A (en) 2008-08-29 2010-03-11 Asahi Corp Shoe sole
WO2020021622A1 (en) 2018-07-24 2020-01-30 株式会社Ｂｍｚ Shoe insole
WO2021210045A1 (en) 2020-04-13 2021-10-21 株式会社アシックス Sole and footwear

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